#include <stdio.h>
#include "add.h"
#include"sub.h"
int main()
{
	int x = 20;
	int y = 10;
	int z = my_add(x, y);
        int q=my_sub(x,y);
	printf("%d + %d = %d\n", x, y, z);
        printf("%d+%d=%d\n",x,y,q);
	return 0;
}
